US3244674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
S-octahydroanthracene poly ether-dialcohols, bis carbonate monomers and polycarbonates
Assignee: United States Steel Corp
•
Filing: 1962-07-24
•
Granted: 1966-04-05
•
Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Koloblelski Marjan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:47
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/16; C08G64/1608; C08G63/00; C08G63/66; C08G64/18; C08G64/183; C10; C10M; C10M3/00; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
AS A COMPOSITION OF MATTER, A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
10 words
AS A COMPOSITION OF MATTER, A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
10 words
AS A COMPOSITION OF MATTER, A COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
10 words
AS A COMPOSITION OF MATTER, A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2258400A
Cited
US2596091A
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US2668801A
Cited
US2722555A
Cited
US2807651A
Cited
US2885378A
Cited
US2875251A
Cited
US3008932A
Cited
US2979486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |